Supramolecular Design of Donor-Acceptor Complexes via Heteroatom Replacement toward Structure and Electrical Transporting Property Tailoring

Jianqun Jin, Guankui Long, Yongqian Gao, Jing Zhang, Changjin Ou, Caixia Zhu, Haixiao Xu, Jianfeng Zhao, Mingtao Zhang, Wei Huang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A feasible strategy relies on using heteroatom replacement, namely, chemical modification of an organic compound. Here we present this design concept for donor-acceptor complexes, which involves introducing nitrogen atoms to the middle ring of donor molecules to promote short contacts and reduce steric effect of the mixed framework. These nitrogen-modified complexes can possess a shorter molecular distance besides the mixed-stacking pathway, enlarged π-π interactions, or even a scarce 1:2.5 molar ratio through extra acceptor insertion. As a result, the unique 1:2 complex with nitrogen atoms on the different sides demonstrated stable electron field-effect mobility performance, whereas the binary system with no nitrogen replacement or N atoms on the identical sides displayed poor ambipolar properties. These results confirmed that heteroatom replacement was a powerful molecular design tool to fine-tune the molecular packing of organic donor-acceptor complexes and their corresponding electronic properties.

Original languageEnglish
Pages (from-to)1109-1116
Number of pages8
JournalACS Applied Materials and Interfaces
Volume11
Issue number1
DOIs
StatePublished - 9 Jan 2019

Keywords

  • electron transport
  • heteroatom replacement
  • short contacts
  • stoichiometry varying
  • supramolecular design
  • theoretical calculation

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